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'A. G. DONNELLY.

Harvester.

No. 84,051. Patented Nov. 17,1868.

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or; DONNELLY,

- ALEXANDER Letters Patent No.

015 BREESPORT, NEW YORK.

84,051, dated November 17,1858

INIPROVEMBNT IN HARVESTERS.

The Schedule referred to in these Letters Patent and making part of the name- To all whom it may concern.-

Be it known that I, ALEXANDER G. DONNELLY, of Breesport, Oheinung county, and State of New York, have invented an Improved Mowing-Machine; and I hereby declare the following to be an exact description thereof, reference being had to the accompanying drawhigh, and to the letters of reference marked thereon, making a part of this specification, in which hliigure '1 represents a top view of the mowing-me Q KDQ.

Figure 2 represents a. rear View of the same.

Figure 3 represents a sectional side elevation.

Figure 4 represents the connection between the gearing-devices and the cutters.

Figure 5 represents the adjustable double-toothed wheel.

lhe nature of my invention consists in the construction of the adjustable double-toothed wheel, as hereinafter set forth.

The tongue or shafts work independently, and the team moves regularly and easily, so that the draught is very light, and allows the machine to be drawn by one horse.

A represents the ratchet-hub wheels, with their toothed wheel B revolving upon the same axle as the carriage-wheels, and gearing into a pinion, G, which operates a separate shaft, C, that moves an adjustable toothed wheel, D.

This wheel D is adjusted by unscrewing the outer rim, removing it, and setting the shaft 0, with the interior toothed wheel D, lower in the journal-boxes of the rear frame, so as to gear the interior and smaller toothed wheel 1) into its pinion E, to add power to the working of the knives, when required in heavy grass. The pinion E is located upon the lower shaft E, in the rear of the machine,'and drives the fly-wheel G,

that operates the pitman H, (the pitmim Worki g in ball-joint J The pitman is connected with a wriston a horizontal wheel, K, that is placed and operates on the or side of the cutter-frame. A rod, L, is also connect by a wrist to the wheel K, and to the upper side of the one end of the cutter-bar M, so as to give a rapid w brating motion to the cutter-bar, with its lniives.

N is the tongue or shalt operating upon the carriageaxle, and indepenilcntly of the mowingalevicee l? is the drivers seat, erected above and behind hilil carriage-axle, so as to assist in balancing the weight of the cutter-bar frame in front, and give equilibrium to the machine.

It is a lover to throw the pinion C out of gear with the tooth-wheel B, when necessary.

S is an upright lever, attached to the cutter-bar frame by means oi acord, T, tor the purpose of raising or lowering the cutter-bar frame, to correspond with the inclination oi the ground.

The ratchetdiubs A A A are self-adj usting, by means of spiral springs V, on the carriage-axle, which enables the machine to he backed without operating the gearing and cutting-devices.

W is a guide-roller in front ofthe frame, toprevont the cutter-bar frame irom dropping directly upon the ground, and enable it to pass regularly over the surface.

That I claim as my invention, and desire to secure by Letters Patent, is-

Tho-wheel D, constructed and operating as herein described and tor the purposes set forth.

ALEX. Gr. DONNELLY.

Witnesses:

J. FRANKLIN REIGART, Eon. F. BROWN. 

